| Father | Male Mercer, William |
| Mother | Female Calvert, Alice |
| Child 1 | Male Mercer, Thomas |
| Born | <1823> | |
| Christened | 21 May 1826 | St Bartholomew, Great Harwood, Lancashire, England |
| Died | DECEASED | |
| Buried | 24 Sep 1873 | Great Harwood, Lancashire, England, United KIngdom |
| Child 2 | Female Mercer, Betty |
| Born | 1828 | Great Harwood, Lancashire, England |
| Christened | 25 Oct 1828 | Great Harwood, Lancashire, England |
| Died | 19 Jul 1896 | Great Harwood, Lancashire, England |
| Buried |
| Child 3 | Male Mercer, Robert |
| Born | 24 Aug 1845 | |
| Christened | 26 Aug 1845 | Great Harwood, Lancashire, England |
| Died | 14 Jun 1846 | |
| Buried | 14 Jun 1846 | Great Harwood, Lancashire, England, United KIngdom |
| Child 4 | Female Mercer, Elizabeth |
| Child 5 | Male Mercer, John |
| Born | 1835 | Great Harwood, Lancashire, England, United KIngdom |
| Christened | 22 Jan 1831 | Great Harwood, Lancashire, England |
| Died | 13 Jan 1834 | |
| Buried | 13 Jan 1834 | Great Harwood, Lancashire, England, United KIngdom |
| Spouse | Bradley, Anne | F9681 | |
| Married | 3 Sep 1855 | Clayton-le-Moor, Lancashire, England |
| Child 6 | Female Mercer, Jinny |
| Child 7 | Female Mercer, Mary |
| Born | ||
| Christened | 6 Nov 1838 | Great Harwood, Lancaster, England |
| Died | DECEASED | |
| Buried |
| Child 8 | Male Mercer, William Calvert |
| Child 9 | Female Mercer, Alice |